// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_LOADER_NAVIGATION_RESOURCE_THROTTLE_H_
#define CONTENT_BROWSER_LOADER_NAVIGATION_RESOURCE_THROTTLE_H_

#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "content/common/content_export.h"
#include "content/public/browser/navigation_throttle.h"
#include "content/public/browser/resource_throttle.h"
#include "content/public/common/request_context_type.h"
#include "third_party/WebKit/public/platform/WebMixedContentContextType.h"

namespace net {
class URLRequest;
}

namespace content {
class ResourceDispatcherHostDelegate;

// This ResourceThrottle is used to convey throttling information to the UI
// thread during navigations. The UI thread can then use its NavigationThrottle
// mechanism to interact with the navigation.
class NavigationResourceThrottle : public ResourceThrottle {
public:
    NavigationResourceThrottle(
        net::URLRequest* request,
        ResourceDispatcherHostDelegate* resource_dispatcher_host_delegate,
        RequestContextType request_context_type,
        blink::WebMixedContentContextType mixed_content_context_type);
    ~NavigationResourceThrottle() override;

    // ResourceThrottle overrides:
    void WillStartRequest(bool* defer) override;
    void WillRedirectRequest(const net::RedirectInfo& redirect_info,
        bool* defer) override;
    void WillProcessResponse(bool* defer) override;
    const char* GetNameForLogging() const override;

    // Used in unit tests to make UI checks pass when they would fail due to no
    // NavigationHandle being present in the RenderFrameHost.
    CONTENT_EXPORT static void set_ui_checks_always_succeed_for_testing(
        bool ui_checks_always_succeed);

    // Used in unit tests to make all navigations transfer.
    CONTENT_EXPORT static void set_force_transfer_for_testing(
        bool force_transfer);

private:
    void OnUIChecksPerformed(NavigationThrottle::ThrottleCheckResult result);

    // Used in transfer navigations.
    void InitiateTransfer();
    void OnTransferComplete();

    net::URLRequest* request_;
    ResourceDispatcherHostDelegate* resource_dispatcher_host_delegate_;
    RequestContextType request_context_type_;
    blink::WebMixedContentContextType mixed_content_context_type_;
    bool in_cross_site_transition_;
    NavigationThrottle::ThrottleCheckResult on_transfer_done_result_;

    base::WeakPtrFactory<NavigationResourceThrottle> weak_ptr_factory_;

    DISALLOW_COPY_AND_ASSIGN(NavigationResourceThrottle);
};

} // namespace content

#endif // CONTENT_BROWSER_LOADER_NAVIGATION_RESOURCE_THROTTLE_H_
